Nannopterygius is an extinct genus of ophthalmosaurid ichthyosaur that lived during the Middle Jurassic to the Early Cretaceous. Fossils are known from England, Kazakhstan, Russia, and Norway and six species are currently assigned to the genus.
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M. S. Arkhangelsky. 1997. On a new genus of ichthyosaurs from the Lower Volgian substage of the Saratov, Volga Region. Paleontological Journal 21(1):87-91
Bibliographie (1)
M. S. Arkhangelsky. 1998. On the ichthyosaurian fossils from the Volgian Stage of the Saratov Basin. Palaeontological Journal (2):87-91